Where
-Infinity
0
Severity
6.7
Buffer Overflow
AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C

A buffer overflow [CWE-121] in the TFTP client library of FortiOS before 6.4.7 and FortiOS 7.0.0 through 7.0.2, may allow an authenticated local attacker to achieve arbitrary code execution via specially crafted command line arguments.

1 / 2
Source: MITRE

Remedy

Upgrade to FortiOS version 7.0.3 or above Upgrade to FortiOS version 6.4.8 or above Upgrade to FortiOS version 6.2.10 or above Upgrade to FortiOS version 6.0.14 or above Upgrade to FortiDDoS-F version 6.4.2 or above Upgrade to FortiDDoS-F version 6.3.1 or above Upgrade to FortiDDoS-F version 6.2.3 or above Upgrade to FortiDDoS-F version 6.1.5 or above Upgrade to FortiOS-6K7K version 6.4.8 or above Upgrade to FortiOS-6K7K version 6.2.9 or above Upgrade to FortiVoice version 6.4.5 or above Upgrade to FortiVoice version 6.0.11 or above Upgrade to FortiProxy version 7.0.2 or above Upgrade to FortiProxy version 2.0.8 or above Upgrade to FortiRecorder version 7.0.0 or above Upgrade to FortiRecorder version 6.4.3 or above Upgrade to FortiRecorder version 6.0.11 or above Upgrade to upcoming FortiRecorder version 2.7.8 or above Upgrade to FortiPortal version 6.0.11 or above Upgrade to FortiMail version 7.2.0 or above Upgrade to FortiMail version 7.0.3 or above Upgrade to FortiMail version 6.4.7 or above Upgrade to FortiAnalyzer version 7.0.3 or above Upgrade to FortiAnalyzer version 6.4.8 or above Upgrade to FortiNDR version 7.0.0 or above Upgrade to FortiDDoS version 5.6.0 or above Upgrade to FortiDDoS version 5.5.2 or above Upgrade to FortiSwitch version 7.2.0 or above Upgrade to FortiSwitch version 7.0.4 or above Upgrade to FortiSwitch version 6.4.10 or above Upgrade to FortiADC version 7.0.1 or above Upgrade to FortiADC version 6.2.3 or above Upgrade to FortiADC version 6.1.6 or above Upgrade to FortiWeb version 7.0.0 or above Upgrade to FortiWeb version 6.4.2 or above Upgrade to FortiWeb version 6.3.17 or above Upgrade to FortiManager version 7.0.3 or above Upgrade to FortiManager version 6.4.8 or above
First published (updated )
Severity
5.3
Infoleak
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:X

An exposure of sensitive system information to an unauthorized control sphere vulnerability [CWE-497] in FortiDDoS version 5.4.0, version 5.3.2 and below, version 5.2.0, version 5.1.0, version 5.0.0, version 4.7.0, version 4.6.0, version 4.5.0, version 4.4.2 and below, FortiDDoS-CM version 5.3.0, version 5.2.0, version 5.1.0, version 5.0.0, version 4.7.0, FortiVoice version 6.0.6 and below, FortiRecorder version 6.0.3 and below and FortiMail version 6.4.1 and below, version 6.2.4 and below, version 6.0.9 and below may allow a remote, unauthenticated attacker to obtain potentially sensitive software-version information by reading a JavaScript file.

1 / 2
Source: MITRE

Remedy

Please upgrade to FortiMail versions 6.0.10 or above. Please upgrade to FortiMail versions 6.2.5 or above. Please upgrade to FortiMail versions 6.4.2 or above.
First published (updated )
Severity
8.8
Buffer Overflow
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C

A buffer copy without checking size of input ('classic buffer overflow') in Fortinet FortiMail webmail and administrative interface version 6.4.0 through 6.4.4 and before 6.2.6 and FortiNDR administrative interface version 7.2.0 and before 7.1.0 allows an authenticated attacker with regular webmail access to trigger a buffer overflow and to possibly execute unauthorized code or commands via specifically crafted HTTP requests.

1 / 2
Source: MITRE

Remedy

Please upgrade to FortiMail version 7.0.0 or above Please upgrade to FortiMail version 6.4.5 or above Please upgrade to FortiMail version 6.2.7 or above Please upgrade to FortiMail version 6.0.11 or above Please upgrade to FortiNDR version 7.2.1 or above
First published (updated )
Severity
7.5
Weak RNG
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:U/RC:C

A use of a cryptographically weak pseudo-random number generator vulnerability in the authenticator of the Identity Based Encryption service of FortiMail 6.4.0 through 6.4.4, and 6.2.0 through 6.2.7 may allow an unauthenticated attacker to infer parts of users authentication tokens and reset their credentials.

Remedy

Please upgrade to FortiMail version 7.0.0 or above Please upgrade to FortiMail version 6.4.5 or above
First published (updated )
Severity
6.7
OS Command Injection, Command Injection
AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:F/RL:X/RC:X

An improper neutralization of special elements used in an os command ('os command injection') in Fortinet FortiMail versions 7.2.0 through 7.2.4 and 7.0.0 through 7.0.6 and 6.4.0 through 6.4.7, FortiRecorder versions 7.0.0 and 6.4.0 through 6.4.4 allows attacker to execute unauthorized code or commands via the CLI.

Remedy

Please upgrade to FortiMail version 7.4.0 or above Please upgrade to FortiMail version 7.2.5 or above Please upgrade to FortiMail version 7.0.7 or above Please upgrade to FortiMail version 6.4.8 or above Please upgrade to FortiRecorder version 7.2.0 or above Please upgrade to FortiRecorder version 7.0.2 or above Please upgrade to FortiRecorder version 6.4.5 or above
First published (updated )
Severity
7.2
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

An improper access control vulnerability in FortiMail admin webUI 6.2.0, 6.0.0 to 6.0.6, 5.4.10 and below may allow administrators to access web console they should not be authorized for.

First published (updated )
Severity
6.1
XSS
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

A reflected Cross-Site Scripting (XSS) vulnerability in Fortinet FortiMail 5.1 and earlier, 5.2.0 through 5.2.9, and 5.3.0 through 5.3.9 customized pre-authentication webmail login page allows attacker to inject arbitrary web script or HTML via crafted HTTP requests.

First published (updated )
Severity
4.9
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

An improper access control vulnerability in FortiMail admin webUI 6.2.0, 6.0.0 to 6.0.6, 5.4.10 and below may allow administrators to perform system backup config download they should not be authorized for.

First published (updated )
Severity
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

A missing cryptographic step in the implementation of the hash digest algorithm in FortiMail 6.4.0 through 6.4.4, and 6.2.0 through 6.2.7 may allow an unauthenticated attacker to tamper with signed URLs by appending further data which allows bypass of signature verification.

First published (updated )
Severity
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

A missing cryptographic step in the Identity-Based Encryption service of FortiMail before 7.0.0 may allow an unauthenticated attacker who intercepts the encrypted messages to manipulate them in such a way that makes the tampering and the recovery of the plaintexts possible.

First published (updated )
Severity
8.8
Buffer Overflow
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Multiple instances of incorrect calculation of buffer size in FortiMail webmail and administrative interface and FortiNDR administrative interface may allow an authenticated attacker with regular webmail access to trigger a buffer overflow and to possibly execute unauthorized code or commands via specifically crafted HTTP requests.

1 / 2
Source: FortiGuard
First published (updated )
Severity
9.8
SQL Injection
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Multiple improper neutralization of special elements of SQL commands vulnerabilities in FortiMail before 6.4.4 may allow a non-authenticated attacker to execute unauthorized code or commands via specifically crafted HTTP requests.

First published (updated )
Severity
4.9
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Missing cryptographic steps in the Identity-Based Encryption service of FortiMail before 7.0.0 may allow an attacker who comes in possession of the encrypted master keys to compromise their confidentiality by observing a few invariant properties of the ciphertext.

First published (updated )
Severity
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

A missing release of memory after its effective lifetime vulnerability in the Webmail of FortiMail 6.4.0 through 6.4.4 and 6.2.0 through 6.2.6 may allow an unauthenticated remote attacker to exhaust available memory via specifically crafted login requests.

First published (updated )
Severity
8.8
OS Command Injection
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

An improper neutralization of special elements used in an OS Command vulnerability in the administrative interface of FortiMail before 6.4.4 may allow an authenticated attacker to execute unauthorized commands via specifically crafted HTTP requests.

First published (updated )
Severity
8.8
Path Traversal
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Multiple Path traversal vulnerabilities in the Webmail of FortiMail before 6.4.4 may allow a regular user to obtain unauthorized access to files and data via specifically crafted web requests.

First published (updated )
Severity
8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

The combination of various cryptographic issues in the session management of FortiMail 6.4.0 through 6.4.4 and 6.2.0 through 6.2.6, including the encryption construction of the session cookie, may allow a remote attacker already in possession of a cookie to possibly reveal and alter or forge its content, thereby escalating privileges.

First published (updated )
Severity
5.3
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

A missing cryptographic steps vulnerability in the function that encrypts users' LDAP and RADIUS credentials in FortiSandbox before 4.0.1, FortiWeb before 6.3.12, FortiADC before 6.2.1, FortiMail 7.0.1 and earlier may allow an attacker in possession of the password store to compromise the confidentiality of the encrypted secrets.

First published (updated )
Severity
5.3
Infoleak
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:F/RL:X/RC:X

A exposure of sensitive information to an unauthorized actor in Fortinet FortiMail versions 6.0.9 and below, FortiMail versions 6.2.4 and below FortiMail versions 6.4.1 and 6.4.0 allows attacker to obtain potentially sensitive software-version information via client-side resources inspection.

1 / 2
Source: MITRE
First published (updated )
Severity
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

An improper authentication vulnerability in FortiMail before 7.0.1 may allow a remote attacker to efficiently guess one administrative account's authentication token by means of the observation of certain system's properties.

First published (updated )
Severity
9.8
Input Validation
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

An improper input validation vulnerability in the web server CGI facilities of FortiMail before 7.0.1 may allow an unauthenticated attacker to alter the environment of the underlying script interpreter via specifically crafted HTTP requests.

First published (updated )
Severity
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

A format string vulnerability [CWE-134] in the command line interpreter of FortiADC version 6.0.0 through 6.0.4, FortiADC version 6.1.0 through 6.1.5, FortiADC version 6.2.0 through 6.2.1, FortiProxy version 1.0.0 through 1.0.7, FortiProxy version 1.1.0 through 1.1.6, FortiProxy version 1.2.0 through 1.2.13, FortiProxy version 2.0.0 through 2.0.7, FortiProxy version 7.0.0 through 7.0.1, FortiOS version 6.0.0 through 6.0.14, FortiOS version 6.2.0 through 6.2.10, FortiOS version 6.4.0 through 6.4.8, FortiOS version 7.0.0 through 7.0.2, FortiMail version 6.4.0 through 6.4.5, FortiMail version 7.0.0 through 7.0.2 may allow an authenticated user to execute unauthorized code or commands via specially crafted command arguments.

First published (updated )
Severity
6.3
Buffer Overflow
AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C

A buffer overflow [CWE-121] in the TFTP client library of FortiOS, may allow an authenticated local attacker to achieve arbitrary code execution via specially crafted command line arguments.

First published (updated )
Advisory
FG-IR-21-173
Severity
4.3
AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N/E:P/RL:U/RC:R

An insufficient verification of data authenticity vulnerability [CWE-345] in FortiClient, FortiMail and FortiOS AV engines may allow an attacker to bypass the AV engine via manipulating MIME attachment with junk and pad characters in base64.

First published (updated )
Advisory
FG-IR-22-074
Severity
6.1
XSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

A improper neutralization of input during web page generation ('cross-site scripting') in Fortinet FortiMail version 7.0.1 and 7.0.0, version 6.4.5 and below, version 6.3.7 and below, version 6.0.11 and below allows attacker to execute unauthorized code or commands via crafted HTTP GET requests to the FortiGuard URI protection service.

First published (updated )
Severity
6.1
XSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

An improper neutralization of input during web page generation vulnerability [CWE-79] in the Webmail of FortiMail before 7.2.0 may allow an unauthenticated attacker to trigger a cross-site scripting (XSS) attack via sending specially crafted mail messages.

First published (updated )
Severity
8.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

An insufficient verification of data authenticity vulnerability [CWE-345] in FortiClient, FortiMail and FortiOS AV engines may allow an attacker to bypass the AV engine via manipulating MIME attachment with junk and pad characters in base64.

1 / 2
Source: FortiGuard
First published (updated )
Severity
6.5
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

An improper access control vulnerability [CWE-284] in FortiMail 7.2.0, 7.0.0 through 7.0.3, 6.4 all versions, 6.2 all versions, 6.0 all versions may allow an authenticated admin user assigned to a specific domain to access and modify other domains information via insecure direct object references (IDOR).

First published (updated )
Severity
5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

A improper restriction of excessive authentication attempts vulnerability [CWE-307] in Fortinet FortiMail version 6.4.0, version 6.2.0 through 6.2.4 and before 6.0.9 allows a remote unauthenticated attacker to partially exhaust CPU and memory via sending numerous HTTP requests to the login form.

1 / 2
Source: MITRE

Remedy

Please upgrade to FortiAuthenticator version 6.5.0 or above, Please upgrade to FortiDeceptor version 3.2.0 or above. Please upgrade to FortiMail version 6.4.1 or above, Please upgrade to FortiMail version 6.2.5 or above, Please upgrade to FortiMail version 6.0.10 or above.
First published (updated )

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203